NB-IoT BMS (Battery Monitoring System)

Dotcom IoT LLP has developed NB-IoT BMS, a rugged and self-powered battery monitoring solution.

The system is tailored for environments where direct access to batteries is difficult, yet long-term, remote monitoring is essential.

In many industrial and field-deployed applications (remote IoT devices, telecom towers, solar sites, etc.), monitoring battery health and charge levels is challenging due to:

• Limited physical access

• Harsh environmental conditions

• Power constraints

The client required a battery-powered, IP67-rated monitoring system that could:

• Run for extended durations on minimal power

• Communicate battery data over NB-IoT

• Be managed remotely with cloud connectivity

Designed a fully enclosed, IP67-rated NB-IoT BMS controller, capable of monitoring remote battery levels reliably.

Powered the system using Nordic nRF9160 SiP, benefiting from ultra-low power consumption for long battery life.

Built the solution on ARM Cortex-M33 microcontroller and Zephyr RTOS for efficient real-time performance.

Integrated NB-IoT communication to enable wide-area connectivity even in low-signal or rural environments.

Developed a partner mobile app to allow users to remotely:

• View battery levels

• Configure system parameters

• Receive alerts and diagnostics

Enabled OTA firmware updates via AWS cloud, allowing remote feature enhancements and bug fixes.

Reliable battery visibility in hard-to-reach areas without physical intervention.

Multi-year operation on internal battery due to ultra-low power design.

Easy deployment thanks to ruggedized enclosure and wireless connectivity.

Cloud integration for seamless access to historical data, alerts, and system health.

Field-friendly user app provides partners and operators a simple interface for monitoring and configuration.